<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Vue基础呀</title>
  </head>

  <body>
    <div id="app">
      <button  @click="changeIsShow">  切换显示状态</button>
      <button  @click="addAge">  +年龄以切换显示状态</button>


      <img v-show="isShow" src="./img/ra11_240x240.jpg" alt="不显示">
      <img v-show="age>18" src="./img/ra11_240x240.jpg" alt="不显示">


    </div>
    

    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>


    <script>
      new Vue({
        el: "#app",
        data: {
          isShow: true,
          age: 17
        },
        methods: {
          changeIsShow:function(){
            this.isShow = !this.isShow;
          },
          addAge: function(){
            this.age++;
            console.log(this.age)
          }
        
        },

      })
    </script>

    <!-- data是这个Vue实例中使用到的数据。用什么就写什么 -->
  </body>
</html>
